At the base of the hair root is a small ball-like formation called a bulb.

VOA: special.2011.04.05

But this is a compound, right, it has some non-zero heat of formation from the elements. So is water, right?

但这是种化合物，对吧？,它具有非零的生成热,水也是一样，对吧？

麻省理工公开课 - 热力学与动力学课程节选

Well, you know, it goes back to the beginning of the formation of the personal computer industry, which--that sounds like a long time ago.

嗯，你知道，这要追溯到,个人电脑产业的形成初期，听起来相当久远了。

斯坦福公开课 - 戴尔CEO-Michael.Dell谈创业和发展课程节选

Another hike is a twenty-two kilometer walk that ends at an unusual rock formation.

VOA: special.2009.04.15

While America has been preoccupied with Iraq and Afghanistan, what new geo-political developments formation of alliances, etc.

当美国正忙于伊拉克问题,和阿富汗问题时，在地缘政治发展方面,如建立联盟，等等。

普林斯顿公开课 - 国际座谈会课程节选

This rock formation is made of white-gray quartzite, a kind of sandstone.

VOA: special.2009.07.20

The tests showed it was four hundred years older than the Stonehenge formation in England -- and a thousand years older than the Great Pyramid of Giza in Egypt.

VOA: special.2010.08.03

North Korea's prime minister Kim Yong Il,told Mr.Wen that Pyongyang is open to nuclear talks, but made no specific endorsement of the six-party formation.

VOA: standard.2009.10.05

Pentagon Press Secretary Geoff Morrell says Gates urged both leaders to avoid a repetition of the "painful memory" of the five-month government formation process in 2005.

VOA: standard.2009.12.12

The Global Political Agreement, signed one year ago by President Robert Mugabe and then-opposition leader Morgan Tsvangirai, led to the formation of the unity government with Mr.Tsvangirai named to the new post of prime minister.

VOA: standard.2009.09.12